45641001TH Rev.1 3-15 /Oki Data CONFIDENTIAL3.9 Assist Mode (3C)3.9.1 General descriptionThis is a mode to operate the partitions of HDD, initialize the SRAM data, erase the HDD/SRAMdata, back up/restore the encryption key and licences.Functions:• Clearing update error flag (Clear Error Flag in Software Installation)• Formatting data storage partition (Format Root Partition)• Creating HDD partition (Format HDD)• Formatting SRAM data (Clear SRAM)• Backing up/restoring encryption key and license (Key Backup Restore)• Erasing HDD securely (Erase HDD Securely)• Erasing SRAM securely (Erase SRAM Securely)• Clearing service tech password (Clear Service Tech)3.9.2 Operating Procedure(1) Turn ON the power while [3] button and [CLEAR] button are pressed simultaneously.The following screen is displayed.Firmware Assist ModeSelect number(1-8) and press START key1. Clear Error Flag in Software Installation2. Format Root Partition3. Format HDD4. Clear SRAM5. Key Backup Restore6. Erase HDD Securely7. Erase SRAM Securely8. Clear Service Tech PasswordFig. 3-6(2) Select the item with the digital keys and press the [START] button.3.9.3 Functions[a] Clearing update error flag (Clear error Flag in software Installation)Even if the firmware downloading has been completed normally, the Recovery Mode mayaccidentally start up and an F600 error occurs when the power is turned ON again. In thiscase, clear the Update Error flags used in the download process with this function. (Normally,the flags are automatically cleared in the download process.)Also in the case the Recovery Mode accidentally starts up after the replacement of SRAMon the SYS board, the flags are cleared with this function.[B] Formatting data storage partition (Format Root Partition)When a defect occurs on the UI data, etc. which are stored in the HDD, the partition with thestored UI data, etc. is formatted with this function.Do not use this function since it is not normally necessary. HDD data must be installed afterperforming this function.
